document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=302994>Question 302994</A>: <I><SPAN STYLE=\"word-break: break-all;\"> One inlet pipe can fill an empty pool in 4 hours, and a drain can empty the pool in 10 hours. How long will it take the pipe to fill the pool if the drain is left open?\r<BR>\n" );
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document.write( "thanks :) </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #217183 by </B><A HREF=/tutors/aboutme.mpl?userid=stanbon><B>stanbon(75887)</B></A><img src=\"/images/stars/stars-13.gif\" alt=\"\" >&nbsp;<A HREF=/tutors/aboutme.mpl?userid=stanbon><IMG SRC=http://www.algebra.com/images/aboutme-small.gif BORDER=0 alt=\"About Me\" VALIGN=MIDDLE></A>&nbsp;<IMG SRC=http://www.algebra.com/images/nopicture.jpg><BR>You can <A HREF=\"/cgi-bin/embed-solution.mpl?show=1&solution=217183\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> One inlet pipe can fill an empty pool in 4 hours, and a drain can empty the pool in 10 hours. How long will it take the pipe to fill the pool if the drain is left open? <BR>\n" );
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document.write( "Filling rate: 1/4 pool/hr<BR>\n" );
document.write( "Emptying rate: 1/10 pool/hr<BR>\n" );
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document.write( "Together rate: 1/x pool/hr<BR>\n" );
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document.write( "Equation:<BR>\n" );
document.write( "rate - rate = together rate<BR>\n" );
document.write( "1/4 - 1/10 = 1/x<BR>\n" );
document.write( "(10-4)/40 = 1/x<BR>\n" );
document.write( "6/40 = 1/x <BR>\n" );
document.write( "x = 40/6 = 20/2 = 6 2/3 hrs (time to fill the pool<BR>\n" );
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document.write( "cheers,<BR>\n" );
document.write( "Stan H. </SPAN>\n" );
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